Shelf



FIG. 1 is a perspective view of the shelf of my design;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is an end view of the shelf of my new design as viewed from the left side of FIG. 1 with the right side view being a mirror image thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a rear view thereof.

The wood grain pattern which is partially shown in the drawing is understood to repeat uniformly on the surfaces where shown. 

The ornamental design for a shelf, as shown and described. 